is 2 305483 - 1
has 91960 decimal digits
takes 0.002 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26797.268671.6418 %10000000206662045590116.195617.3554 %213.464376.5635 %
Target2440.000056.8182 %55007500000.000511.4219 %0.000561.7504 %
Difference+23+97.2686+14.8236 %+9994500+206661295590+116.1952+5.9334%+213.4638+14.8131 %

Known prime factors (2 factors, 134.5 bits, 0.04402886% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3054837942559722.92113
13
-1131.834e-121.705e-82.098e-8
305483387955125073567995916118986805044734111.5806349864396276846762604121781
29 × 68677745113 × 3188235736200353
2021-09-056867774511331882357362003535.404e+111,791,7503,345,239

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2022-02-06Lisander ViaeneManual testing5000050000
skipped known factor: 7942559
--0.0019.781%
2023-03-17Denial140i5-8400100000065871826020
skipped known factor: 7942559
--43.7448.885%
2024-02-22Denial140i5-84001000000010000000
skipped known factor: 7942559
--0.10125.612%
2024-02-23Denial140i5-840010000000206662045590
skipped known factor: 7942559
--113.954.435%


Trial Factoring results:
5758596061626364656667
No TF results for M305483


ECM factoring results:
Total ECM effort:16.475 GHz-days
Estimated T-Level:28.162
DigitsB1CompleteFacMiss
201100043.8990.000%
25500006.1050.223%
302500000.63253.129%
3510000000.05194.990%
4030000000.00399.661%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002812.145
250000250000001445.495
25000038500000532.341
250000385000001476.494


Lucas-Lehmer results:
No L-L results for M305483


PRP results:
dateuseridcompidcofactorsres64
2017-09-22Oliver KruseOllaptop
7942559
D3E1FE9ED1FE0FFA
2017-09-22Oliver KruseManual testing
7942559
D3E1FE9ED1FE0FFA
2017-10-12Oliver KruseGTX-0
7942559
D3E1FE9ED1FE0FFA
2017-12-11ATHxps
7942559
D3E1FE9ED1FE0FFA
2020-04-18Oliver KruseAddPrpType5
7942559
53C19636E4327BB3
2021-09-05mikrNitron
7942559
3879551250735679959161189868050447
53C19636E4327BB3
2021-09-05H Michaelson
7942559
3879551250735679959161189868050447
53C19636E4327BB3


CERT results:
dateuseridcompid
2021-09-05Richard Thomasdjinn.pc
2021-09-05curtiscgrn129--19l


P-1 factor-bounds graph:
B1 = 10000000, B2 = 206662045590 (P-1 stage 2)
B1 = 1000000, B2 = 65871826020 (P-1 stage 2)
B1 = 10000000 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
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TF factor-bounds graph:
this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=28.16 ~= 77-bit
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Last modified: 2024-03-13T02:15:48+00:00